There art two cardinal sins from which all others spring: Impatience and Laziness.

Hold fast to the diary from today on! Write regularly! Don't surrender! Even if no salvation should come, I want to be worthy of it every moment.

What do I have in common with Jews? I don't even have anything in common with myself.

The delights of this life are not its own, but our fear of the ascent into a higher life; the torments of this life are not its own, but our self-torment because of that fear.

For words are magical formulae. They leave finger marks be hind on the brain, which in the twinkling of an eye become the footprints of history. One ought to watch one' s every word.

Every one of us has a bad conscience, which he tries to escape by going to sleep as quickly as possible.

The spirit becomes free only when it ceases to be a support.